1. Push notifications: call sendPushToAll after streaming completes
2. Mobile offline: add useOfflineQueue + banners to MobileChatView
3. New conversation streaming: call startStream in Path 1 handleSend
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- MobileChatView: full-screen mobile chat using 100dvh, back button, safe-area input
- ChatPanel: conditionally renders MobileChatView on mobile via useMediaQuery
- ChatConversationList: wraps ScrollArea in PullToRefresh for mobile
- ChatInput: pb-[env(safe-area-inset-bottom)] padding + 44px Send button touch target
- ChatConversationItem: min-h-[48px] touch target per UI-SPEC
- Add enableVoiceInput prop to ChatInput props interface
- Add handleTranscription callback that appends transcription text to textarea state
- Render VoiceRecordButton conditionally when enableVoiceInput is true
- Pass enableVoiceInput={true} from ChatPanel to ChatInput
- Mark INPUT-02, INPUT-03, INPUT-04 as Complete in REQUIREMENTS.md traceability table
- Add scrollToMessageId/setScrollToMessageId to ChatPanelContext
- Add "Search chat messages" item to CommandPalette (dispatches nexus:open-chat-search)
- Integrate ChatSearchDialog, ChatBranchSelector, ChatBookmarkList into ChatPanel
- Add export buttons (Markdown) and bookmarks panel toggle in header
- Wire branch-on-edit: branchConversation called when editing message with subsequent replies
- Add scroll-to-message support in ChatMessageList via virtualizer.scrollToIndex
- Show GitBranch icon for branch conversations in ChatConversationList
- ChatPanel integrates useStreamingChat, ChatAgentSelector, ChatStopButton
- Agent routing via resolveAgentFromContent for slash commands and @mentions
- handleEdit: editMessage + truncateMessagesAfter + re-stream with edited content
- handleRetry: finds actual prior user message, truncates from user message onward, re-streams
- Build agentMap from agents for message identity bars
- ChatInput: slash command popover (triggered by / at start of input)
- ChatInput: @mention popover (triggered by @word pattern)
- Input disabled during streaming with 'Waiting for response...' placeholder
- Stop button shown conditionally when isStreaming
- Agent selector in header for per-conversation agent switching
- Remove ScrollArea wrapper (replaced by virtualizer's own scroll in ChatMessageList)
- Add ChatConversationItem with DropdownMenu actions (Rename, Pin/Unpin, Archive, Delete) and active highlight
- Add ChatConversationList with IntersectionObserver infinite scroll, loading skeletons, delete confirmation dialog, and CRUD handlers
- Add ChatMessageList with auto-scroll-to-bottom on new messages and empty state
- Update ChatPanel to render ChatConversationList (left column) and ChatMessageList (right column); handleSend uses two paths: direct chatApi for new conversations, hook mutation for existing ones
